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what is (7k-3)(k2-2k+7)

 Jan 22, 2018
 #1
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( 7k - 3)  ( k^2 - 2k  +  7)  =

 

7k ( k^2  - 2k  +  7 )  =          7k^3  -   14k^2   +  49k

+                                       +

-3 ( k^2 - 2k  + 7)   =                          -3k^2    +    6k   -   21

_____________                  _________________________

 

                                             7k^3   -   17k^2  +  55k   -  21

 

 

cool cool cool

 Jan 22, 2018

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